Design and analysis of tilt integral derivative controller with filter for load frequency control of multi-area interconnected power systems

Rabindra Kumar Sahu; Sidhartha Panda; Ashutosh Biswal; G T Chandra Sekhar

doi:10.1016/j.isatra.2015.12.001

Design and analysis of tilt integral derivative controller with filter for load frequency control of multi-area interconnected power systems

ISA Trans. 2016 Mar:61:251-264. doi: 10.1016/j.isatra.2015.12.001. Epub 2015 Dec 19.

Authors

Rabindra Kumar Sahu¹, Sidhartha Panda², Ashutosh Biswal², G T Chandra Sekhar²

Affiliations

¹ Department of Electrical Engineering, Veer Surendra Sai University of Technology (VSSUT), Burla 768018, Odisha, India. Electronic address: rksahu123@gmail.com.
² Department of Electrical Engineering, Veer Surendra Sai University of Technology (VSSUT), Burla 768018, Odisha, India.

PMID: 26712682
DOI: 10.1016/j.isatra.2015.12.001

Abstract

In this paper, a novel Tilt Integral Derivative controller with Filter (TIDF) is proposed for Load Frequency Control (LFC) of multi-area power systems. Initially, a two-area power system is considered and the parameters of the TIDF controller are optimized using Differential Evolution (DE) algorithm employing an Integral of Time multiplied Absolute Error (ITAE) criterion. The superiority of the proposed approach is demonstrated by comparing the results with some recently published heuristic approaches such as Firefly Algorithm (FA), Genetic Algorithm (GA) and Particle Swarm Optimization (PSO) optimized PID controllers for the same interconnected power system. Investigations reveal that proposed TIDF controllers provide better dynamic response compared to PID controller in terms of minimum undershoots and settling times of frequency as well as tie-line power deviations following a disturbance. The proposed approach is also extended to two widely used three area test systems considering nonlinearities such as Generation Rate Constraint (GRC) and Governor Dead Band (GDB). To improve the performance of the system, a Thyristor Controlled Series Compensator (TCSC) is also considered and the performance of TIDF controller in presence of TCSC is investigated. It is observed that system performance improves with the inclusion of TCSC. Finally, sensitivity analysis is carried out to test the robustness of the proposed controller by varying the system parameters, operating condition and load pattern. It is observed that the proposed controllers are robust and perform satisfactorily with variations in operating condition, system parameters and load pattern.

Keywords: Differential Evolution (DE) algorithm; Generation Rate Constraint (GRC); Governor Dead Band (GDB); Load Frequency Control (LFC); Thyristor Controlled Series Compensator (TCSC); Tilted Integral Derivative controller with Filter (TIDF).